Ruling-pen



H. R.-FULLER.

RULING PEN, APPLICATION FILED JUNE 5, 1919.

33%8637 PatntedAug. 3,1920.

PATENT- OFFICE.

I HARVEY :a. FULLER; or KIRKSVILLE, Mxssouar.

aaacs'z.

Specification of Letters Patent.-

nouns-PEN.

Patented Aug. 3,1920.

Application filed' ifune 5, 1919. Serial No. 302,035. i

pen is provided with imperforate blades and the pen is filled by introducing ink into the space between the blades, it being customary to wipe off with a cloth the surplus iink which may adhere to the outer surfaces of the said blades. This not onlyoccasions a considerable waste of, ink but the operation of filling is annoying and uncleanly. Furthermore, the ordinary ruling-pen, even in the. larger sizes, is adaptedtogcontain in the space between its blades, only a relatively small quantity of ink so that more or less frequent filling of the pen is required with a consequent loss of time. In consideration of the foregoing it is the primary object of the present invention to provide a ruling pen so constructed that the same will be adapted to contain a mixim'um quantity of ink in proportion to the size of the pen, and which pen may be more readily and conveniently filled with ink than the ordinary pen and without likelihood of smearing the ink upon the outer surfaces of the blades, thus obviating the practice of wiping the blades after the filling operation has been performed. 7 Another object of the invention is to provide a pen possessing the features above mentioned and which pen may be manu-, factured at substantially the same cost as the ordinary ruling pen.

Another disadvantage presented in the ordinary ruling pen is that, except by turning the pen upon its side, the quantity of ink in the pen cannot be determined, and therefore another important object of the invention is to so construct a ruling pen that the quantity of ink contained therein may be readily ascertained at a glance at any time while the pen is in use without lifting the pen from the paper or otherwise interrupt in the work of drafting. r

uling pens of the ordinary construction further present the disadvantage that if the blades are opened to any considerable extent in order to draw a very heavy line or if a linefis, drawn with'tli e penintersecting another linefwhichjhas not thoroughly dried, the nkis l able to flow from the pen so freely .as to cause blotting. It is therefore another object of the. invention toprovide a ruling pen so constructed that the flowsof ink therefrom will be retarded to a desirable degree so that this last named disadvantage will be overcome.

- In the accompanying drawings,

Figure 1 is lP Il View ruling pen constructed in invention;

2isa-sideelevation of the pen; F1g.' 3 is a vertical transverse sectional view taken substantially on the line 3-.3 of Fig.1.]

accordance with the present In the drawings the numeral 1 indicates the handleof the ruling pen, 2 the fixed or relatively rigid blade thereof which blade is the one ordinarily presented to the straight edge,and 3 the resilient or adjustable blade, theadjustment of whichis effected through the mediumof the adjusting screw 4. As is'usual, in pens of this class, the blades 2 and3 are gradually tapered and also graduallyi decreasfedin thiclmessin the direction of their working or sharpened ends 5, the blade 3 being relatively thick except at and adj acent its said working end.

The present invention resides, briefly stated, in providing in the blade 3, an opening, channel, or recess which will constitute an ink reservoir and will serve otherlpurposes to be presently pointed out. Thus in the illustrated embodiment of the invention, the blade 3 is formed between its worklongitudinally extending slot or opening 6, this opening being preferably of the triangular or wedge shape shown clearly in Fig. 1 of the drawings or, in other words,being of maximum width at its endnext adjacent the adjusting screw 4:, as indicated by the numeral 7, and being gradually decreased in width to its end located next adjacent the working end of the said blade 3. The side walls of the opening 6 are indicated bythe planes converging in the direction of the working end of the pen.

From the foregoing and from a comparison of Figs. 1 and 2 and by reference to Fig. 3, the opening 6 hasa maximum width greater than the usual height of the space between the inner faces of the blades of the pen. Thus the pen embodying the pres" ent invention may be more-readily and 0on veniently filled by supplying the ink to this space through the wider end of'the opening 6, the ink filling not only the space between the inner faces of the blades but also more or less completely filling the said opening 6. Thus the opening 6 constitutes a reservoir located in one of the blades of the pen and greatly increases the inkholding capacity of the pen'. It will also'be understood that due to'the fact that the'walls of the opening 6 converge in the. manner above stated, the flow of inkfromthe pen will-be; somewhat retarded because of the capillary attraction of the ink tending to retain a certain volume of the ink within the opening 6.

In order that the capacity of the reservoir -may be greatly increased without the necessity of forming theblade 3 of extraordinary thickness, I preferably form this bladewith an outstanding flan e 9 located atthat side of the opening 6 which is located atthe left when the pen is viewed from the front, this flange extending the entire length of thesaid side of the opening and atits lower end being extended laterally partly about the lower end of the opening as lndicated' by the numeral 10. The inner face of this flange or, in other words, that face which is presented toward the opening,is flush and occupies a common planewith the corresponding wall of the opening. Of course, by capillary attraction, the ink within the reservoir thus provided bedrawn to the said face of the flange'and consequently the capacity ofthe reservoir will be greatly ,increased. At the same time, the flange serves as a guard against which the fore finger or middle finger may rest in the use of the pen and be protected from becoming soiled with ink from the reservoir. I

Having thus described the invention, what 'is claimed as new is:

1. A ruling pen comprising two blades,

one of said blades having a longitudinal l oneof said blades having a longitudinally extending opening terminating at one end 'adgacent'theworklng end of the blade and constltutmg a reservoir, the said blade'bemg provided with an outstanding flange extending along oneside'of the opening and about the said end of the opening y 4;. A ruling pen comprising two blades,

one of "said blades having a longitudinally extending opening the side walls of which converge in the direction of the Working end of the blade,the said blade'being provided with an outstanding flange extending along one of the side walls ofsaid opening.

In testimonyiwhereof I aflix my signature. gI-ILR. FULLER. [I s] 

